LinesOfALargeFileTestCase.php
4f9915ecac81stable

LinesOfALargeFileTestCase.php
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			<?php

			/**
			* @group testcase
			*/
			final class LinesOfALargeFileTestCase extends PhutilTestCase {

			public function testBasics() {
			$this->writeAndRead(
			"abcd",
			array(
			"abcd",
			));
			}

			public function testTerminalDelimiterPresent() {
			$this->writeAndRead(
			"bat\ncat\ndog\n",
			array(
			"bat",
			"cat",
			"dog",
			));
			}

			public function testTerminalDelimiterAbsent() {
			$this->writeAndRead(
			"bat\ncat\ndog",
			array(
			"bat",
			"cat",
			"dog",
			));
			}

			public function testChangeDelimiter() {
			$this->writeAndRead(
			"bat\1cat\1dog\1",
			array(
			"bat",
			"cat",
			"dog",
			),
			"\1");
			}

			public function testEmptyLines() {
			$this->writeAndRead(
			"\n\nbat\n",
			array(
			'',
			'',
			'bat',
			));
			}

			public function testLargeFile() {
			$line = "The quick brown fox jumps over the lazy dog.";
			$n = 100;

			$this->writeAndRead(
			str_repeat($line."\n", $n),
			array_fill(0, $n, $line));
			}

			public function testLongLine() {
			$line = str_repeat('x', 64 * 1024);
			$this->writeAndRead($line, array($line));
			}

			public function testReadFailure() {
			$caught = null;
			try {
			$f = new LinesOfALargeFile('/does/not/exist.void');
			$f->rewind();
			} catch (FilesystemException $ex) {
			$caught = $ex;
			}

			$this->assertEqual(true, $caught instanceof $ex);
			}

			private function writeAndRead($write, $read, $delimiter = "\n") {
			$tmp = new TempFile();
			Filesystem::writeFile($tmp, $write);

			$lines = array();
			$iterator = id(new LinesOfALargeFile($tmp))->setDelimiter($delimiter);
			foreach ($iterator as $line) {
			$lines[] = $line;
			}

			$this->assertEqual(
			$read,
			$lines,
			"Write: ".phutil_utf8_shorten($write, 32));
			}

			}